The thing is that, in creating the new cast and completely rewriting the story, Claire already ended up being more like Starlight or Trixie than Twilight lol. I swear that wasn't even intentional, despite my love of those two. Starlight and Trixie only became regular cast members on the show after I had already begun work on SLARPG

Claire's basically nothing like late season Twilight, who becomes an authority figure, so it's impossible to give Claire characters that replicate the dynamics Twilight has with Starlight and Trixie. Hell, if anything, the dynamics Twilight has with Starlight and Trixie are closer to the dynamic between FAITH and Claire, regardless of which characters' roles they inherited from Horse RPG. I very quickly stopped giving a shit about replicating the character dynamics from Horse RPG 1:1, and even Horse RPG had already diverged heavily from how some characters were written in the show, so it can be difficult to try and look at it through that MLP lens again because a lot of it just doesn't fit

Let's go back further, then. It's likely that, had I made Horse RPG in a post-StarTrix world, they would've had a large role in the game. Maybe I would've had them off on their own B-plot adventure as a duo, with their paths routinely crossing with the main party, since I like them so much. Or maybe they'd be in the main party themselves instead of Twilight and Applejack! But Fluttershy and Rainbow don't really have much of a connection to Starlight and Trixie, so I'm not sure how well that'd work. Maybe I would've leaned into the comedy of that awkwardness? I don't know. I just feel like having Starlight and Trixie around would make me write Twilight VERY differently, maybe even giving her a whole different role, and that changes the whole game. In turn, I have no idea what the version of SLARPG that used this whole different game as a starting point would look like

Or I could just ignore this butterfly effect stuff and give Claire a pair of rival witches who are dating each other, one a hyper-competent control freak and the other an overconfident charlatan, and call it a day lol. Maybe they're hoofed mammals to go with Claire being a cow, and Starlight becomes a deer or a gazelle or something and Trixie becomes a donkey